Yeah, something like this HTC Bluetooth one or maybe a wired one and a female-femalecoupler, although I'm not sure if it'd actually work.
Would the difference in SQ be noticeable?
its noticeable if you put a good earphone to work , or something with a spark in its treble , most of the time they lose the treble in the air , but if you dont love treble they can be good , some thing like a bit more premium will do good , may be a sony mw1 to be the least expensive and is best for the price , but still a mw1 wont get you a sq even with a er-p4 over 8.0 , for me , cuz to me cutting off the treble is the 2nd worst thing . but if you can do with that , go get one , it will save you from some hassle .